#2B4474
Closest named color: Twilight Blue (#0A437A). oklch(39.2% 0.087 262.3), rgb(43, 68, 116).
Aa
White text reads best on this color (9.62:1).
About this color
#2B4474 is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.087 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.029 away. White text reads best on it, at 9.62:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.18:1 |
| White text | 9.62:1 |
Values
| HEX | #2B4474 |
| RGB | rgb(43, 68, 116) |
| HSL | hsl(219, 46%, 31%) |
| OKLCH | oklch(39.2% 0.087 262.3) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #2B4474 | 9.62:1 | AAA | Lc -96.4 | Preferred for body text |
| Black text on #2B4474 | 2.18:1 | Fails | Lc 11.8 | Not readable |
| #2B4474 text on white | 9.62:1 | AAA | Lc 92.1 | Preferred for body text |
| #2B4474 text on black | 2.18:1 | Fails | Lc -10.3 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 900.
-
Step 50
50
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CCDAF2
oklch(88.5% 0.036 261.3)
-
Step 300
300
#AAC1EC
oklch(80.8% 0.066 262.8)
-
Step 400
400
#7DA0E2
oklch(70.6% 0.105 262.6)
-
Step 500
500
#5C87DA
oklch(63% 0.134 262.5)
-
Step 600
600
#426FC8
oklch(55.5% 0.147 262.4)
-
Step 700
700
#345DAD
oklch(49.2% 0.136 262.2)
-
Step 800
800
#2C4C8C
oklch(42.7% 0.113 262.6)
-
Step 900
900 (this color)
#2B4474
oklch(39.2% 0.087 262.3)
-
Step 950
950
#172641
oklch(27% 0.055 261.4)
#2B4474 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #2F4876 | 0.014 |
| Deuteranopia (no green cones) | #254273 | 0.010 |
| Tritanopia (no blue cones) | #004F56 | 0.076 |
| Achromatopsia (no color) | #454545 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4474
#2B4474
oklch(39.2% 0.087 262.3)
- #5B4000
#5B4000
oklch(39.1% 0.081 81.5)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #2B4474, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.029
- Light Navy #155084 ΔE 0.041
- Cobalt #1E488F ΔE 0.045
- Dark Grey Blue #29465B ΔE 0.046
- Deep Sea Blue #015482 ΔE 0.051
- Dusk Blue #26538D ΔE 0.055
- Marine Blue #01386A ΔE 0.056
- Charcoal #264653 ΔE 0.060
Use #2B4474 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.